package java_flow_contral;

public class Demo04_Switch {
    public static void main(String[] args) {
//        case 穿透
//        JDK 7 以后支持字符串
//        字符的本质是数字
        char grade = 'B';
        switch (grade){
            case 'A':
                System.out.println("优秀");
                break;
            case 'B':
                System.out.println("良好");
                break;
            case 'C':
                System.out.println("及格");
                break;
            case 'D':
                System.out.println("再接再厉");
                break;
            case 'E':
                System.out.println("挂科");
                break;
            default:
                System.out.println("未知语句");
        }

    }
}
